Display panel or portion thereof with a transitional graphical user interface



FIG. 1 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a first image in a sequence of our design;

FIG. 2 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a second image in the sequence thereof;

FIG. 3 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a third image in the sequence thereof;

FIG. 4 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a fourth image in the sequence thereof;

FIG. 5 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a fifth image in the sequence thereof;

FIG. 6 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a sixth image in the sequence thereof;

FIG. 7 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a seventh image in the sequence thereof;

FIG. 8 is a front view of a display panel or portion thereof with a transitional graphical user interface showing an eighth image in the sequence thereof;

FIG. 9 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a ninth image in the sequence thereof;

FIG. 10 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a tenth image in the sequence thereof;

FIG. 11 is a front view of a display panel or portion thereof with a transitional graphical user interface showing an eleventh image in the sequence thereof;

FIG. 12 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a twelfth image in the sequence thereof;

FIG. 13 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a thirteenth image in the sequence thereof; and,

FIG. 14 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a fourteenth image in the sequence thereof.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-14. The process or period in which one image transitions to another image forms no part of the claimed design.

The outermost broken line rectangle illustrates a display panel or portion thereof that forms no part of the claimed design. The long and short broken lines of the right-most icon in FIGS. 8-13 form a part of the claimed design. 

CLAIM The ornamental design for a display panel or portion thereof with a transitional graphical user interface, as shown and described. 